Integration of an aminopyridine derived cobalt based homogenous cocatalyst with a composite photocatalyst to promote H<sub>2</sub>evolution from water

Irfan, Rana Muhammad; Khan, Sayed Ali; Tahir, Mudassir Hussain; Ahmad, Tauqeer; Ali, Liaqat; Afzal, Masood; Ali, Hazrat; Abbas, Anees; Munawar, Khurram Shahzad; Zhao, Jianqing; Gao, Lijun

doi:10.1039/d1nj00086a

Cited by 8 publications

(3 citation statements)

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“…Using molecular cocatalysts in composite photocatalytic systems to capture more photogenerated electrons from photosensitizers might be a promising strategy. Irfan et al (2021) showed that the homogenous cocatalysts (aminopyridine derived Co-complex) have led the way for increased electron capturing from photoexcited composite photocatalysts (CdS/Ni 3 C), and they offer a lot of potential for improving photocatalytic performance for low-cost H 2 evolution under visible light. Nanoparticles have become popular as homogenous photocatalysts due to their enhanced features, such as a large surface-to-volume ratio, regulated uniform particle size and composition which enhances the degradation rate (Padmanaban et al, 2016).…”

Section: Homogenous Photocatalysismentioning

confidence: 99%

Recent advances in the elimination of persistent organic pollutants by photocatalysis

Gaur

Dutta

Singh

et al. 2022

Front. Environ. Sci.

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The non-ending needs of growing human population are being met by rapid industrialization and globalization, which have nowadays become an indispensable component of growth. Although these activities have led to phenomenal growth of the human civilization, at the same time, they have resulted in severe environmental pollution by discharge of highly toxic waste. This waste is severely detrimental not only for the environment but also for the health of the human population. Among different classes of pollutants, one being considered as one of the highly toxic ones is that of persistent organic pollutants (POPs). Advanced oxidation technologies (AOTs) play a major role in the degradation of pollutants by converting organic pollutants into CO2, H2O, and mineralized inorganic ions. AOTs include UV-based photocatalysis, ozonation, electrochemical oxidation, and Fenton and Fenton-like processes There are some difficulties and challenges associated with AOT, such as being highly capital intensive and high consumption of energy. To overcome these bottlenecks, photocatalytic degradation is a promising method that uses solar energy for the degradation of such pollutants. Photocatalysis is further classified into homogenous and heterogenous photocatalysis. As a part of heterogenous photocatalysis, semiconductor photocatalysts have received great attention; but because of their drawbacks such as the recombination of the electron/hole pair, low adsorption rate, and low surface area coverage, nanotechnology was considered for bringing a novel and enhanced remediation photocatalysis process. To this end, the designing of a more efficient photocatalyst by modifying morphology, composition, and structure and reducing toxicity is the need of the hour for the abatement of environmental pollutants. This review focuses on the degradation and removal of highly toxic persistent organic pollutants by using photocatalytic degradation with a detailed account of the various pollutants, their degradation mechanism, process shortcomings, remedial measures, and future prospects.

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Section: Homogenous Photocatalysismentioning

confidence: 99%

Recent advances in the elimination of persistent organic pollutants by photocatalysis

Gaur

Dutta

Singh

et al. 2022

Front. Environ. Sci.

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“…Hugo Schiff, a German scientist and Nobel Prize laureate, prepared the first of these condensation products from primary amines and carbonyl compounds in 1864. , The Schiff base is a structural counterpart of a ketone or aldehyde that has had the carbonyl group (CO) replaced with an imine or azomethine group . Schiff bases are very vital due to their ease of synthesis, availability, and electrical characteristics, particularly in the synthesis of metal complexes via azomethine nitrogen. , Schiff base coordination chemistry has gotten a lot of interest because of its important functions in analytical chemistry, metal refining, organic synthesis, metallurgy, electroplating, and photography. , Schiff bases not only play an important role in advanced coordination chemistry but also are equally significant in bioinorganic chemistry . They have a wide range of medical uses due to their pharmacological characteristics because of the presence of an azomethine (CN) linkage .…”

Section: Introductionmentioning

confidence: 99%

Shedding Light on the Synthesis, Crystal Structure, Characterization, and Computational Study of Optoelectronic Properties and Bioactivity of Imine derivatives

et al. 2022

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Two imine compounds named as (E)-2-(((3,4dichlorophenyl)imino)methyl)phenol (DC2H) and (E)-4-(((2,4dimethylphenyl)imino)methyl)phenol (DM4H) are synthesized, and their crystal structures are verified using the single-crystal X-ray diffraction (XRD) technique. The crystal structures of the compounds are compared with the closely related crystal structures using the Cambridge Structural Database (CSD). The crystal packing in terms of intermolecular interactions is fully explored by Hirshfeld surface analysis. Void analysis is carried out for both compounds to check the strength of the crystal packing. Furthermore, a state-of-the-art dual computational technique consisting of quantum chemical and molecular docking methods is used to shed light on the molecular structure, optoelectronic properties, and bioactivity of indigenously synthesized compounds. The optimized molecular geometries are compared with their counterpart experimental values. Based on previous reports of biofunctions of the indigenously synthesized imine derivatives, they are explored for their potential inhibition properties against two very crucial proteins (main protease (M pro ) and nonstructural protein 9 (NSP9)) of SARS-CoV-2. The calculated interaction energy values of DC2H and DM4H with M pro are found to be −6.3 and −6.6 kcal/mol, respectively, and for NSP9, the calculated interaction energy value is found to be −6.5 kcal/mol. We believe that the current combined study through experiments and computational techniques will not only pique the interest of the broad scientific community but also evoke interest in their further in vitro and in vivo investigations.

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“…[12,13] Based on denticity and stability, the Schiff bases are also very attractive chelators and can form complexes with almost all kinds of transition metals. [14][15][16] The coordination complexes of the Schiff bases derived from 2-aminophenol have gotten a lot of attention because of their widespread application in a variety of biological fields like antibacterial, antifungal, antitumor, nematocide, and antiphlogistic. [17] In addition, these complexes play an important catalytic role in a variety of reactions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, Crystal Structure and Computational Study of Third‐Order NLO Properties of Schiff bases

et al. 2022

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The current study involves the synthesis of two azomethine compounds, (E)‐2‐((6‐nitrobenzo[d][1,3]dioxol‐5‐yl)methylene)amino)phenol (2AP6NO) and (E)‐2‐((4‐ethylbenzylidene)amino)phenol (2AP4ETH), as well as their theoretical investigations. The synthesized azomethine compounds were then characterized by combustion analysis (CHN), FT‐IR, NMR (1H and 13C), and single crystal X‐ray diffraction (SC‐XRD) analysis. The SC‐XRD study confirmed the enol tautomeric form of 2AP6NO as well as 2AP4ETH. The strong and comparatively weak intermolecular interactions were elaborated by Hirshfeld surface analysis. For both compounds, intermolecular interaction energies between the pair of molecules, energy framework, and void analysis were calculated to visualize the three‐dimensional topology of the crystal packing. Additionally, quantum chemical computations were also utilized to study the optical and nonlinear optical (NLO) response. The molecular geometries were optimized at the M06‐2X/6‐311G* method and equated to their respective experimental counterparts. The third‐order NLO polarizabilities were also calculated at the same level of theory. The calculated average third‐order NLO polarizabilities were 62.55×10−36 esu and 55.08×10−36 esu, respectively, predicting the modest behavior of the above compounds when displaying NLO properties.

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Integration of an aminopyridine derived cobalt based homogenous cocatalyst with a composite photocatalyst to promote H₂evolution from water

Abstract: Inexpensive cocatalysts are promising material to improve the performance of photocatalytic systems. However, a cocatalyst can be anchored on photosensitizer in certain amount and further loading can hinder the visible...

Cited by 8 publications

References 43 publications

Recent advances in the elimination of persistent organic pollutants by photocatalysis

Recent advances in the elimination of persistent organic pollutants by photocatalysis

Shedding Light on the Synthesis, Crystal Structure, Characterization, and Computational Study of Optoelectronic Properties and Bioactivity of Imine derivatives

Synthesis, Characterization, Crystal Structure and Computational Study of Third‐Order NLO Properties of Schiff bases

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Integration of an aminopyridine derived cobalt based homogenous cocatalyst with a composite photocatalyst to promote H2evolution from water

Abstract: Inexpensive cocatalysts are promising material to improve the performance of photocatalytic systems. However, a cocatalyst can be anchored on photosensitizer in certain amount and further loading can hinder the visible...

Cited by 8 publications

References 43 publications

Recent advances in the elimination of persistent organic pollutants by photocatalysis

Recent advances in the elimination of persistent organic pollutants by photocatalysis

Shedding Light on the Synthesis, Crystal Structure, Characterization, and Computational Study of Optoelectronic Properties and Bioactivity of Imine derivatives

Synthesis, Characterization, Crystal Structure and Computational Study of Third‐Order NLO Properties of Schiff bases

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Integration of an aminopyridine derived cobalt based homogenous cocatalyst with a composite photocatalyst to promote H₂evolution from water